Regulation 18: Tanks for fish in refrigerated (RSW) or chilled (CSW) sea water
1. If RSW- or CSW-tanks or similar tank systems are used, such tanks shall be provided with a separate, permanently fitted arrangement for the filling and emptying of seawater.
2. If such tanks are to be used also for carrying dry cargo, the tanks shall be arranged with a bilge system and provided with adequate means to avoid ingress of water from the bilge system into the tanks.